Q235 20# ERW / LASW welded yeeb nkab rau dej / roj / roj

Qhov chaw ntawm keeb kwm:	Shandong, Suav
Hom Npe:	Changshengda (CSD)
Model Number:	Q195/Q235/Q345 SS400
Certification:	API, CE, GS, ISO9001
Yam Tsawg Tshaj:	20 tuj
Nqe:	545USD/TON-680USD/TON
Ntim Paub meej:	1.Standard Marine packing
	2. Raws li cov neeg siv khoom xav tau
Chaw nres nkoj:	Shanghai, Tianjin, Qingdao chaw nres nkoj, koj tuaj yeem teev lwm qhov chaw nres nkoj raws li koj xav tau.
Tus me nyuam lub sij hawm:	8-14days
Ntsiab lus uas them:	L / C, T / T
Mov Muaj peev xwm:	100000tons / hli
khoom siv:	ERW: Q235, Q345, 20#, J55, X42 ~ 65, thiab lwm yam.
	LASW:Q195,Q235,Q345B,X42,X52,X60,S355JRH,S355J0H,S355J2H etc

Kev piav qhia:

Straight seam high frequency (ERW) is divided into two forms: induction welding and contact welding according to different welding methods. It uses hot-rolled wide coils as raw materials and undergoes pre-bending, continuous forming, welding, heat treatment, sizing, straightening, cutting, etc. Compared with the spiral process, it has the advantages of shorter welds, high dimensional accuracy, uniform wall thickness, good surface quality, and high pressure resistance. However, the disadvantage is that it can only produce thin-walled pipes of small and medium diameters, and gray spots and lack of fusion are prone to occur at the welds. , Groove corrosion defects. At present, the most widely used fields are city gas, crude oil and refined oil transportation, etc.

Straight seam submerged arc (LSAW) is produced by using a single medium-thick plate as raw material, pressing (rolling) the steel plate in a mold or forming machine, and using double-sided submerged arc welding and diameter expansion. Its finished product specifications range is wide, the toughness, plasticity, uniformity and density of the weld are good, and it has the advantages of large pipe diameter, thick pipe wall, high pressure resistance, low temperature resistance and strong corrosion resistance. When constructing high-strength, high-toughness, and high-quality long-distance oil and gas pipelines, most of the required steel pipes are large-diameter, thick-walled straight seam submerged arc pipes. According to API standards, in large-scale oil and gas transmission pipelines, straight-joint submerged arc is the only designated applicable pipe type when passing through Class 1 and Class 2 areas such as alpine zones, seabed, and densely populated urban areas.

Raws li kev sib txawv molding, nws tuaj yeem muab faib ua:

UOE steel pipe: After the single steel plate is pre-bent at the edge, it undergoes processes such as U forming, O forming, internal welding, external welding, and mechanical cold expansion.

JCOE steel pipe: that is, pre-welding, forming, and cold expansion after welding according to "J-C-O-E"

HME steel pipe: formed by mandrel rolling method according to "C-C-O", welded and then cold expanded.

Specifications:

ERW PIB
ASTM	ASTM A53 B, ASTM A178, ASTM A252 GR.2, A500, ASTM A513 Cov ntsiab lus
EN	EN 10204/10217 S235JR,S275JR,S355,S355JR,S355J2H
API	API 5L X42/46/52/56/60/70
Cov pa roj carbon	Txuj: ASTM A671, ASTM A672
Alloy hlau	ASTM A691
OD	1/2" -24" (21.3mm-610mm)
WT	1.65mm-20mm
Daim ntawv thov	Kab Yeeb; OCTG (Oil Lub Tebchaws Tubular Cov Khoom Muag); Hloov Cov Yeeb Nkab; Txheej yeeb nkab.

LSAW PIPE
Standard	ASTM 53, API Spec 5L, ASTM A252-89; EN 10217, EN10219
Qib Steel	API 5L: GR A, GR B, X42, X46, X56, X60, X65, X70ASTM A252 GR 1, GR 2, GR 3ASTM A53: GR A, GR B, GR C, GR DBS 4360: Grade 43, Grade 50EN: S275, S275JR, S355JRH, S355J2H
Daim ntawv thov	Siv rau roj / roj / dej; Kev xa mus; Engineering; Offshore tej yaam num.
pab	OD (hli)	WT (mm)	LENGTH (m)
Roller yeeb nkab	1200-3800 (47.24 "-150")	12-120 (1/2”- 4.7”)	<= 3.2
rau kev tsim kho (Pile Piles)	350-1600 (14 "- 63")	6-60 (1/4” -2.36”)	6-12
Roj & roj pipeline	406-1524 (16 "- 60")	6-40 (1/4”-1.57”)	8-12.1
Ntxiv rau cov lus qhia saum toj no, cov kav dej tuaj yeem tsim tau raws li cov neeg siv khoom xav tau.

Nthuav Qhia:

hauj lwm:

Tsis tshua muaj siab ua kua conveying ncaj seam steel yeeb nkab

Txoj kab uas hla: 219mm ~ 508mm

Phab ntsa thickness: 6mm ~ 20mm

Txuj: GB / T 3091-2008

Khoom siv: L245 ~ L690, Q235, thiab lwm yam.

Applications: Suitable for straight seam welded steel pipes used in the transportation of low-pressure fluids such as water, gas, air, and heating steam and other structures.

American standard ncaj seam welded steel yeeb nkab

Txoj kab uas hla: 219mm ~ 406mm

Phab ntsa thickness: 6mm ~ 14mm

Txheem: ASTM

Khoom siv: GrA GrB

Applications: Mainly used in water conservancy projects, oil and gas industry, chemical industry, electric power industry, agricultural irrigation, urban construction, etc.

Ncaj seam steel kav rau roj casing thiab roj kav

Txoj kab uas hla 219mm ~ 508mm

Phab ntsa thickness 6mm ~ 20mm

Txuj API-5CT

Khoom siv: H40, J55, N80, P110

Daim ntawv thov: Roj casing thiab tubing.

American standard kauv welded steel yeeb nkab

Txoj kab uas hla 219mm ~ 3520mm

Phab ntsa thickness 5mm ~ 26mm

Txheem ASTM

Khoom siv Gr.A, Gr.B, Gr.C, Gr.1 ~ Gr.11

Application: Mainly used in pile pipes for water conservancy projects, oil and gas industry, chemical industry, electric power industry, agricultural irrigation, urban construction, etc.

Ncaj seam pipeline steel kav rau roj thiab roj tsheb thauj mus los

Txoj kab uas hla 219mm ~ 508mm

Phab ntsa thickness 6mm ~ 20mm

Txuj API-5L

Khoom siv Gr.B, X42 ~ X100

Daim ntawv thov: Siv rau kev thauj mus los roj thiab roj.

Kev Tshaj Loj:

The company has selected internationally advanced technology and equipment: such as W-FF molding, solid-state high-frequency induction welding, ultrasonic flaw detection, magnetic flux leakage detection, and high-end testing instruments: such as metallographic analysis, Vickers hardness tester, impact testing machine, spectrometer Analyzers, universal testing machines and other equipment. Since its establishment, it has obtained various international certifications and honorary qualifications: such as API 5L, API5CT, ISO9002-2000 pressure pipeline production license, industrial product production license, China Petroleum and Petrochemical Membership Certificate, China Quality Product Certificate, etc. Products are exported to South America, North America, the European Union, Southeast Asia and other places. It has been well received by customers all over the world for many years.